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CONFIG_CGROUP_MEM_RES_CTLR: Memory Resource Controller for Control Groups

General informations

The Linux kernel configuration item CONFIG_CGROUP_MEM_RES_CTLR:

Help text

Provides a memory resource controller that manages both anonymous memory and page cache. (See Documentation/cgroups/memory.txt)

Note that setting this option increases fixed memory overhead associated with each page of memory in the system. By this, 20(40)bytes/PAGE_SIZE on 32(64)bit system will be occupied by memory usage tracking struct at boot. Total amount of this is printed out at boot.

Only enable when you're ok with these trade offs and really sure you need the memory resource controller. Even when you enable this, you can set "cgroup_disable=memory" at your boot option to disable memory resource controller and you can avoid overheads. (and lose benefits of memory resource controller)

This config option also selects MM_OWNER config option, which could in turn add some fork/exit overhead.



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